Vintage Radio Service Manual - CHEVROLET model 986146 5-tube pushbutton car AM radio receiver. Manufactured by Chevrolet Motors, div of General Motors Corp., of Detroit, MI. Dated 1947. 4 pages. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro audio equipment.